Technical data

8 U1401A User’s and Service Guide

1Getting Started

The rotary switch at a glance

Before powering on the U1401A, set the slide switch to M or

M/S position. To switch on the U1401A, turn the rotary

switch to the desired function. The input and output

functions are selected together. The outer circle indicates the

output (source) function while the inner circle indicates the

input (meter) function.

Figure 1-3 The rotary switch

Table 1 - 3 Rotary switch positions and their corresponding functions

No.

Description/Function

Input (white) Output (yellow)

1 OFF —

2 DC, AC, or AC+DC voltage

measurements

• Square wave output

• Constant current: ±25 mA

• Constant voltage: ±1.5 V, ±15 V

3 DC, AC, or AC+DC mV

measurements or temperature

measurement

Constant voltage: ±1.5 V, ±15 V

4 Resistance measurement and

continuity test

Constant voltage: ±1.5 V, ±15 V